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What will come in the place of the question mark ‘(?)’ in the following equation, if ‘−’ and‘÷’ are interchanged and ‘×’ and ‘+’ are interchanged?7 +
Question

What will come in the place of the question mark ‘(?)’ in the following equation, if ‘−’ and‘÷’ are interchanged and ‘×’ and ‘+’ are interchanged?
7 + 45 − 15 × 5 ÷ 12 = ?​​

A.

14

B.

16

C.

15

D.

17

Correct option is A

Given: 7 + 45 − 15 × 5 ÷ 12 = ?
Given Sign
-
×
Interchanges Sign
÷
+
​Given equation is solve by BODMAS rule.
Operation preference wiseSymbolBrackets[],,()Orders, of(power),(root),ofDivision÷Multiplication×Addition+Subtraction\begin{array}{|c|c|} \hline\textbf{Operation preference wise} & \textbf{Symbol} \\\hline\text{Brackets} &[],{}, () \\ \hline \text{Orders, of} & (power), √ (root) , of \\ \hline \text{Division}& ÷ \\ \hline \text{Multiplication} & × \\ \hline \text{Addition} & + \\ \hline \text{Subtraction} & - \\\hline\end{array}
New equation:  7 × 45 ÷ 15 + 5 - 12 = ?
7 × 3 + 5 - 12 = ?
21 + 5 - 12 = ?
26 - 12 = ?
? = 14
Thus, correct option is (a).

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